Breast-pump.



0.0. R.SCHWIDETZKY.

BREAST PUMP. APPLICATION FILED FEB. I8. 1918.-

1,278,76Q, PatentedSept. 10, 1918.

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"entrain sand-its PATENT orrron OSCAR O. R. SCHWIDETZKY, OF I-IASBROUCK HEIGHTS, NEW JERSEY, ASSIGNOR TO IBECTON DICKINSON & 00., OF RUTHERFORD, NEW JERSEY.

BREAST-PUIEP.

Application filed February 18, 1918.

To all whom it may concern:

Be it known that I, OSCAR O. R. SOHWL DETZKY, a citizen of the United States and a resident of Hasbrouck Heights, in the county of Bergen and State of New Jersey, have invented a new and Improved Breast-Pump, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved breast pump arranged to prevent the milk drawn from the breast from passing into the rubber bulb thus preventing the bulb from deterioration and obviating cleaning of the same. Another object is to provide the body of the breastpump at one end with a flaring mouth and at the other end with a flaring neck to allow convenient cleaning of the body and to permit of readily removing the bulb whenever it is desired to clean the body. Another object is to insure a snug seatmg of the bulb in the neck of the body to prevent leakage at this point and thus insure proper working of the pump for a lon time. ject is to permit of feedlng the milk received by the breast pump direct from the breast pump to the infant.

In order to accomplish the desired result, use is made of a glass receptacle having a flaring mouth at one end and a flaring neck at the other end, the receptacle having an integral reservoir intermediate the said ends, and a rubber bulb provided with an integral hub fitting into the said neck. Use is also made of a tube closed at one end and inserted with its other end in the hub of the rubber bulb, the closed end of the tube projecting beyond the hub into the receptacle and the projecting portion of the tube being provided with a side opening or openings.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indi cate corresponding parts in both views.

Figure 1 is a longitudinal central section of the breast pump;

Fig. 2 is a transverse section of the same on the line 2-2 of Fig. 1;

Fig. 3 is a longitudinal central section of the mouth of the breast pump provided with means for feeding the milk direct from the breast pump to the infant; and

Another ob- Specification of Letters Patent. Patented Sept. 10, 1918.

Serial No. 217,898.

Fig. 4 is a side elevation of the nipple plug detached from the breast pump.

The glass receptacle 10 of the breast pump is provided with a flaring mouth 11 and a flaring neck 12 located directly opposite the flaring mouth 11. The receptacle 10 is provided at its bottom intermediate the ends 11 and 12 with an integral reservoir 13 for receiving the milk drawn into the receptacle by way of the mouth 11 and through the action of a rubber bulb 14. This rubber bulb 14 is provided with an integral hub 15 fitting into the flaring neck 12 with the adjacent portion of the bulb 14L fitting onto the outer flaring portion of the neck 12. By this arrangement'the bulb is securely held in position on the neck 12 of the receptacle 10 to prevent leakage, at this point, of air or milk when the breast pump is used. The hub 15 is provided with a central cylindrical bore 16 in which fits the tube 18, closed at its forward end and extending into the receptacle 10. The forward portion of the tube 18 is provided with one or more side openings 19 for the passage of air from the bulb 14 or into the same on alternately ressing and releasing the bulb. It will also be noticed that by providing the tube 18 with the side opening 19 any milk that is drawn into the receptacle 10 is not liable to pass into the tube 18 and then into the bulb 14, and hence said bulb is not liable to deteriorate by the action of the milk and it is not necessary to clean the bulb as would be necessary if milk should pass into the bulb.

It is understood that in the manufacture of the breast pump the bore 16 is somewhat smaller in diameter than the tube 18 so that the tube is firmly held in place by the frictional contact of the wall of the bore 16 on the peripheral face of the tube 18.

Whenever it is necessary to feed the milk drawn into the glass receptacle 10 of the breast pump to an infant then use is made of a plug or tube 20 inserted in the mouth 11 of the glass receptacle as shown in Fig. 3. The plug 20 is preferably made of glass and is provided with external flanges 21 and 22 and a ring 23 of rubber, cork or other material is placed on the inner end of the plug 20 and snugly fits against the wall of the mouth 11 to securely hold the plug in place and to prevent leakage. A nipple 24 'of usual construction is drawn over the outer flange 22 to hold the nipple in position on the plug. By the arrangement described the milk previously drawn into the glass receptacle can be readily sucked out by the infant. In case the infant is too Weak to draw or suck the milk out of the glass receptacle by its own efforts then a gentle pressure is exerted on the bulb 14 to force the milk out of the glass receptacle by Way of the plug 20 and the nipple 24:.

The breast pump shown and described is very simple in construction and composed of but three parts, not liable to get out of order easily.

Having thus described my invention, I claim as new and desire to secure by Letters Patent A breast pump, comprising a receptacle having open ends'an'd an integral reservoir intermediate the open outwardly flaring ends, a rubber bulb having an integral hub fitting into one end of the said receptacle, and a tube closed at one end and inserted With its other end in the Said bulb hub, the closed end 01 the tube projecting beyond the hub into the said receptacle, and the projecting portion being provided with a side opening.

OSCAR O. R. SCHWVIDETZKY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents, Washington, D. G. 

